x+30x(x+4)=22

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Solution for x+30x(x+4)=22 equation:


Simplifying
x + 30x(x + 4) = 22

Reorder the terms:
x + 30x(4 + x) = 22
x + (4 * 30x + x * 30x) = 22
x + (120x + 30x2) = 22

Combine like terms: x + 120x = 121x
121x + 30x2 = 22

Solving
121x + 30x2 = 22

Solving for variable 'x'.

Reorder the terms:
-22 + 121x + 30x2 = 22 + -22

Combine like terms: 22 + -22 = 0
-22 + 121x + 30x2 = 0

Begin completing the square.  Divide all terms by
30 the coefficient of the squared term: 

Divide each side by '30'.
-0.7333333333 + 4.033333333x + x2 = 0

Move the constant term to the right:

Add '0.7333333333' to each side of the equation.
-0.7333333333 + 4.033333333x + 0.7333333333 + x2 = 0 + 0.7333333333

Reorder the terms:
-0.7333333333 + 0.7333333333 + 4.033333333x + x2 = 0 + 0.7333333333

Combine like terms: -0.7333333333 + 0.7333333333 = 0.0000000000
0.0000000000 + 4.033333333x + x2 = 0 + 0.7333333333
4.033333333x + x2 = 0 + 0.7333333333

Combine like terms: 0 + 0.7333333333 = 0.7333333333
4.033333333x + x2 = 0.7333333333

The x term is 4.033333333x.  Take half its coefficient (2.016666667).
Square it (4.066944446) and add it to both sides.

Add '4.066944446' to each side of the equation.
4.033333333x + 4.066944446 + x2 = 0.7333333333 + 4.066944446

Reorder the terms:
4.066944446 + 4.033333333x + x2 = 0.7333333333 + 4.066944446

Combine like terms: 0.7333333333 + 4.066944446 = 4.8002777793
4.066944446 + 4.033333333x + x2 = 4.8002777793

Factor a perfect square on the left side:
(x + 2.016666667)(x + 2.016666667) = 4.8002777793

Calculate the square root of the right side: 2.190953623

Break this problem into two subproblems by setting 
(x + 2.016666667) equal to 2.190953623 and -2.190953623.

Subproblem 1

x + 2.016666667 = 2.190953623 Simplifying x + 2.016666667 = 2.190953623 Reorder the terms: 2.016666667 + x = 2.190953623 Solving 2.016666667 + x = 2.190953623 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.016666667' to each side of the equation. 2.016666667 + -2.016666667 + x = 2.190953623 + -2.016666667 Combine like terms: 2.016666667 + -2.016666667 = 0.000000000 0.000000000 + x = 2.190953623 + -2.016666667 x = 2.190953623 + -2.016666667 Combine like terms: 2.190953623 + -2.016666667 = 0.174286956 x = 0.174286956 Simplifying x = 0.174286956

Subproblem 2

x + 2.016666667 = -2.190953623 Simplifying x + 2.016666667 = -2.190953623 Reorder the terms: 2.016666667 + x = -2.190953623 Solving 2.016666667 + x = -2.190953623 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.016666667' to each side of the equation. 2.016666667 + -2.016666667 + x = -2.190953623 + -2.016666667 Combine like terms: 2.016666667 + -2.016666667 = 0.000000000 0.000000000 + x = -2.190953623 + -2.016666667 x = -2.190953623 + -2.016666667 Combine like terms: -2.190953623 + -2.016666667 = -4.20762029 x = -4.20762029 Simplifying x = -4.20762029

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.174286956, -4.20762029}

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